Moeitz hostgmanist



NIH isllli PaterrtedNov. 6,1883.

iliw lill! lll lll M. HONIGMANN.

' UgrLIzATIoN OP EXHAUST STEAM.

(No Model.)

No. z'fglj UNITED ,Sfrnrns @nrios;L

MORITZ HONIGMANN, OF AIX-IrA-GHAPELLE, GERMANY.

UTlLlZATlON OF EXHAUST-STEAM. y

SPECIFICATION forming part of Letters Patent No. 287,937, dated November 6, 1883. Application inea June s, issu. (No modem To all whom zit Ntg'concern:

are cocks or valves c a', the former of which Be it known that I, MORITZ HONI'GMANN, a is closed when steam is supplied from the subject of the Emperor of Germany, residing at AiX-la-Ghapelle, Germany, have invented anew and useful Improvement in the Utilization of Exhaust-Steam, of which the following is a specification, reference being had to the accompanying drawing.

The invention consists in a method of utiliz-- 1o ing exhaust-steam, whereby locomotive and pers to produce temperatures which are much an increasing temperature.

higher than those of steam under pressure.

The accompanying drawing represents the application of my invention to a steam-engine.

D is an arbitrary representation of the cyl- 20 vinder of a steam-engine.

W and A represent the reservoirs, arranged one within the other. The exhaust-steam passes through the tube B, down to the bottom of the inner reservoir, A. This reservoir A. is filled about three parts full of dry or highly-concentrated caustic potash. This latter absorbs the water-vapors introduced with rDhis increased temperature of the inner reservoir is communicated to hot water contained in the outer reservoir, YV, and by this means steam is produced in XV, which passes by a pipe, B, tothe engine-cylinder D, and serves to work the latter. The exhaust-steam is reintroduced into the reservoir A in the manner as before described. f

The reservoir W must be relled from tim to time with hot water from a boiler, and the reservoir A be emptied from time to time of the diluted caustic soda, and relilledV with either dry or highly concentrated caustic soda. The reconcentration of the caustic soda or potash is effected in evaporating-pans or suitable boilers. 1

It will be understood that it is not'necessary to confine the working of my invention to any one special set of apparatus.

0f course, 1n starting the engine, it is necessary to Vuse steam from an outside source. I

boiler C, and the latter of which is closed when steam is supplied from the reservoir Wl The natural law utilized in carrying out my invention has long been known to scientists, and a common illustration of this law has been afforded by sprinkling the bulb of a thermometer with salt, and holding it in the vapor of boiling water, when it is found that the thermometer will indicate a temperature of more than 100 Reaumur, showing that a higher temperature was produced than that of the steam or vapor at atmospheric pressure. When my engine is to be put in operation, steam, under a certain pressure, is introduced into the water contained in the reservoir'XV, and thetemperature ofthe wholeboiler is raised until the atmospheric pressure is reached under which the engine is desired to work. If the engine is to work under a pressure of three atmospheres, the temperature must be raised to about 145 Reaumur. The exhaust-steam is introduced through the pipe B, into the caustic soda or potash in the reservoir A, `wherein it is completely condensed. The absorbed steam heats the caustic soda or potash above the temperature of the'water in the reservoir W. When the temperature of the caustic soda or potash isy only a few degrees higher than the water, the former will give off enough heat to generate steam from the water for keeping the engine working and the temperature of the boiler constant. The more steam used in driving the engine the more will be introduced into the caustic soda or potash, and in consequence the more heat will be stored'in the same. The generation of steam is therefore self-regulating. or self-sustaining power, for through the absorptionbf steam the caustic soda or potash becomes more and more diluted, and therefore the boiling-point is gradually lowered. The engine can therefore only perform work 4up to the time when the boiling-poiht has sunk so low that the differenre between the temperature of the caustic soda or potash and the temperature ofthe water is not great enough to produce the heat for developing the necessary steam. For the production of live horse power for ve hours, it will be necessary to 'charge the reservoir A with about five hundred (500) dol lI o0 Q l V 287,937

Vkilloggrams of caustic soda solution. After l the evaporation of Water, substantially as here- .this has become so diluted that it can no longer in described.

be used, it must be again concentrated, and Intestimonywhereofhavesigned my name the reservoir A charged With a fresh supply. to this specification in the presence of two sub- 5 Having thus described my invention and seribing Witnesses.

the manner of employing the same I olaim- The method of utilizing exhaust-steam, con- MORITZ HONIGMANN' sisting in the employment of caustic soda or Witnesses: potash to absorb such steam, and the employ- FRANZ WIRTH,

io ment of the heat caused by this absorption for FRANZ HAssLAoHER. 

